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Articles 10801 - 10830 of 11182
Full-Text Articles in Physical Sciences and Mathematics
General Phosphorus And Sulphur Trials, J. W. Bowden, R J. Lunt, K F. Longbottom
General Phosphorus And Sulphur Trials, J. W. Bowden, R J. Lunt, K F. Longbottom
Experimental Summaries - Plant Research
(A) Long Term Trials/Trial number: Super x Stocking Rate - 66M30. Super Sulphur and Stocking Rate - 68BR7. Maintenance P and S trials - 69E6, 68B1, 65A1, 65N5, 65C5, 69WH15 & 67N05. Continuous Cropping - 75LG26. Cropping Residual Value - 29M/148, 149. (B) Lupin Trials: Rate of P and S - 78A8, 78A9, 78BA9, 78BA10, 78C5, 78C6, 78E8, 78E9, 78WH7, 78WH8 & 78NA25. Current and Residual phosphorus - 75KA4. (C) Cereal Trials: Depth of Placement of P on Wheat - 78M38. Row spacing x P rates on Wheat - 78ME4. Current and Residual Nitrogen on Wheat - 77M033. (D) Pasture …
Clover Scorch, Annual Rye Grass, Legume Seed Inoculation, D. L. Chatel
Clover Scorch, Annual Rye Grass, Legume Seed Inoculation, D. L. Chatel
Experimental Summaries - Plant Research
List of experiments 78D1 - Clover varietal screening for tolerance to clover scorch - Denmark. Annual ryegrass toxicity- glasshouse experiments. Annual ryegrass toxicity- host range. 77TS35 - Second year nodulation of early flowering subterranean clovers - Bunjil. 78ME25A - The response of Nungarin subterranean clover to inoculation - on land previously sown to clover - Koorda. 78ME25B - The response of Nungarin subterranean clover to inoculation - on land new to clover - Koorda (East). 78ME25C - The response of Nungarin subterranean clover to inoculation - on old clover land - Belka. 78TS22 - The response of Nungarin subterranean clover …
Sowing Systems, Effect On Mineralisation Of Soil Nitrogen And Fallow Re-Assessment., D Tennant
Sowing Systems, Effect On Mineralisation Of Soil Nitrogen And Fallow Re-Assessment., D Tennant
Experimental Summaries - Plant Research
Planting systems investigation. Avondale, Esperance, Wongan Hills, Mt. Barker, Merrden research stations.
Fallow re-assessment, 72M29.
Phosphorus And Sulphur Interactions, 1978., J S. Yeates, R J. Lunt, K F. Longbottom
Phosphorus And Sulphur Interactions, 1978., J S. Yeates, R J. Lunt, K F. Longbottom
Experimental Summaries - Plant Research
Yield results, 78AL3, 78KE4, 78M08, 78BY3, 78BA8, 78BU3, 78N04, 78A7, 78C4, 78B4, 78MA2.
Soil sampling data.
Field Crops And Pasture Experiments., P Mcr Wood
Field Crops And Pasture Experiments., P Mcr Wood
Experimental Summaries - Plant Research
Lupinosis.
Badgingarra.
On-farm treatments.
Investigations Of Ryegrass Toxicity., Brian A. Stynes
Investigations Of Ryegrass Toxicity., Brian A. Stynes
Experimental Summaries - Plant Research
Effect of burning on the production of galls, 78KA13.
Effect of the nematicide Nemacur, on the development of toxicity in ryegrass pasture, 78KA15.
Survival of Anguina sp and emergence from galls, 78KA14.
Study of populationsof Anguina sp on plants, 78KA31.
Long Term Rotation Trials, 1978., I Rowland
Long Term Rotation Trials, 1978., I Rowland
Experimental Summaries - Plant Research
66M29, 67C13, 67N4, 68E5, 68SG5, 73SG16.
Predictive Test For Take-All; Effect Of Nitrogen Fertalizers On Wheat Rhizosphere Micro-Organisms., K Sivasithamparam
Predictive Test For Take-All; Effect Of Nitrogen Fertalizers On Wheat Rhizosphere Micro-Organisms., K Sivasithamparam
Experimental Summaries - Plant Research
Predictive test for take-all. The use of the most probable number technique.
Effect of nitrogen fertalizers on wheat rhizosphere micro-organisms, 78LG3, 78E16.
76LG25, 77LG20, 76E6, 77JE4, 78LG3, 78E16,
Summary Report 1977 Pasture Species Investigations - Wheatbelt, N. R. Mckeown
Summary Report 1977 Pasture Species Investigations - Wheatbelt, N. R. Mckeown
Experimental Summaries - Plant Research
Trials in progress - 68MO23, 70ME2, 71LG17, 71WH13, 76M5. Seasonal conditions. Grazing trials - 68MO23, 70ME2, 71LG17, 71WH13, 75N18, 76M5 - Mini-ley, Merredin. Legume species grazing management trial (West Moora) - 68M023. Comparison of production from Cyprus barrel medic and volunteer pasture (Lake Grace) - 71LG17. Comparison of production from Tornafield medic, serradella and subterranean clover (Wongan Hills Research Station) - 71WH13. Comparison of Geraldton and Northam subterranean clover (Walgoolan) - 70ME2. Early maturing subterranean clover grazing trial (Merredin Research Station) - 75M5. Small plot trials: Early maturing subterranean clovers Subterranean clover trials - southern wheatbelt - 75LG21, 75LG23, 76N16, …
Plants As Pumps, E A N Greenwood
Plants As Pumps, E A N Greenwood
Journal of the Department of Agriculture, Western Australia, Series 4
Native species vary greatly in their ability to pump ground water.
CSIRO studies are measuring water use by different plants to plan revegetation strategies.
Pasture Species Investigations, High Rainfall Area, 1978., D A. Nicholas1978
Pasture Species Investigations, High Rainfall Area, 1978., D A. Nicholas1978
Experimental Summaries - Plant Research
Clover cultivar grazing trial, N. bannister.
Perennial versus annual grass grazing trial, Manjimup research station.
Pasture types and stocking rate trial, Denmark agricultural high school. Clover cultivar evaluation trials, 77BU10, 77AL22, 77D5, 77ES27, 77ES28, 77ES29, 78DE1, 78MN5, 78BR16, 78BU15.
Trikkala evaluation trial, Mt Barker research station, see also report of D. J. Gillespie.
Crop Competition Trials, M L. Poole
Crop Competition Trials, M L. Poole
Experimental Summaries - Plant Research
Rates of nitrogen on mixtures of wheat and ryegrass, 78H69.
Rates of Nungarin subclover under a wheat crop with and without applied nitrogen, 78WH70.
Rates of seedling wheat on competition between wheat and ryegrass, 78WH71.
Rates of ryegrass on wheat and. barley yields, 78WH72
Phosphorus Source Trials, M D.A Bolland
Phosphorus Source Trials, M D.A Bolland
Experimental Summaries - Plant Research
HIGH RAINFALL AREAS.
SAND: 76BU1 - New land phosphorus sources trial (pasture) T. O'Bryne, Yallingup. 76BU4 - Old land phosphorus sources trial (pasture) T. Combe, Busselton.
GRAVEL: 76MT10 - New land phosphorus sources trial (pasture) Mt. Barker Research Station. 76MT9 - Old land phosphorus sources trial (pasture) Mt. Barker Research Station. 77MT1 - New land particle size and method of cultivation phosphorus sources trial (pasture) Mt. Barker Research Station. 77MT2 - Old land phosphorus sources cropping trial (oats every third year). Mt. Barker Research Station.
MEDIUM RAINFALL AREAS.
SAND: 77E537 - Young land phosphorus sources trial (pasture) F. Fels, Esperance. …
Ten-Year Index To The Prairie Naturalist Vols. 1-10 (1968-1978), Virginia Steinhaus
Ten-Year Index To The Prairie Naturalist Vols. 1-10 (1968-1978), Virginia Steinhaus
The Prairie Naturalist
11 pages
From: ACANTHOMYOPS CLAVIGER,
to: Zink, R.M.,
The Effects Of Sulphur Dioxide On Selected Hepatics, Steven L. Gatchel
The Effects Of Sulphur Dioxide On Selected Hepatics, Steven L. Gatchel
Masters Theses
Extensive studies have been reported on the air pollutant sulphur dioxide (SO2), and its effects on vascular and nonvascular plants. It has been shown to interrupt normal physiology, metabolism, reproduction, and alter the plant’s morphology.
Of the cryptogams, lichens have been extensively used as biological indicators of air pollution. More recently, bryophytes have been shown to be as sensitive to contaminates as lichens, and may exhibit responses to the pollutant similar to those of vascular and nonvascular plants. The threshold sensitivity of these cryptogams is about 0.5 ppm over a 12 hour period. However no study to date …
The Ultrastructure Of Cell Division In Male Reproductive Branches Of Polysiphonia Denudata, Cynthia Louise Bosco
The Ultrastructure Of Cell Division In Male Reproductive Branches Of Polysiphonia Denudata, Cynthia Louise Bosco
Dissertations, Theses, and Masters Projects
No abstract provided.
Leaf Litter Processing In Aquatic Systems Two Variable Model, Boyd Jay Hanson
Leaf Litter Processing In Aquatic Systems Two Variable Model, Boyd Jay Hanson
Theses and Dissertations
The adequacy of the negative exponential model with one independent variable, days or accumulated time, as a descriptive equation for aquatic leaf litter processing was examined. The effect of adding a second independent variable, degree days or accumulated temperature, to the model was also examined. The two variable negative exponential model was shown to have at least two advantages over the single variable model. The two variable model adequately fits litter processing data for more cases than the single variable model. The expanded model also allows determination of rate coefficients for various temperature levels of the experiment rather than assuming …
Beach Vegetation And Oceanic Processes Study Of Popham State Park Beach, Reid State Park Beach, And Small Pt. Beach, Philip Trudeau, Paul J. Godfrey, Barry S. Timson
Beach Vegetation And Oceanic Processes Study Of Popham State Park Beach, Reid State Park Beach, And Small Pt. Beach, Philip Trudeau, Paul J. Godfrey, Barry S. Timson
Maine Collection
Beach Vegetation and Oceanic Processes Study of Popham State Park Beach, Reid State Park Beach, and Small Pt. Beach
by Philip Trudeau, Paul J. Godfrey and Barry S. Timson
"Prepared Under Cooperative Agreement Between the Maine Department of Conservation and the Soil Conservation Service, United States Department of Agriculture, September 1977."
On Cover: Time and Tide Resource Conservation and Development Project.
Contents: List of Figures / List of Tables / Introduction / Plant Community Research / Oceanic Processes / Historic Analysis of Barrier Beach Movement and Erosion / Dune Dynamics / Suggestions for Long Term Management / Appendices A - …
The Prairie Naturalist Vol. 9, Nos. 3 And 4. September-December, 1977
The Prairie Naturalist Vol. 9, Nos. 3 And 4. September-December, 1977
The Prairie Naturalist
UPLAND NESTING OF AMERICAN BITTERNS, MARSH HAWKS, AND SHORT-EARED OWLS ▪ H. F. Duebbert and J. T. Lokemoen
ROADSIDE NESTING BY PRAIRIE GROUSE IN NORTHWEST MINNESOTA ▪ W. D. Svedarsky
BOHEMIAN WAXWING POPULATIONS AND WINTER ECOLOGY IN NORTH DAKOTA ▪ E. L. Bakke
AGEING ARCHAEOLOGICAL BISON BY DENTAL ANNULI ▪ J. C. Pigage and M. G. McKenna
COMPARISON OF COYOTE AND COYOTE X DOG HYBRID FOOD HABITS IN SOUTHEASTERN NEBRASKA ▪ B.R. Mahan
NOTES
Abnormal Mid-May Occurrence of White-fronted Geese in Sheridan County, North Dakota ▪ D.P. Kibbe and J. A. Roppe
Common Grackle Preys on Spotted Sandpiper Chick ▪ …
A Seasonal Study Of Phytoplankton Composition Abundance And Productivity In Back Bay, Virginia, Robert Ringgold Comegys
A Seasonal Study Of Phytoplankton Composition Abundance And Productivity In Back Bay, Virginia, Robert Ringgold Comegys
Biological Sciences Theses & Dissertations
Phytoplankton samples were collected monthly (August 1974-June 1975) at two stations in the Back Bay system of southeastern Virginia. Measurements of phytoplankton productivity and potentially influencing environmental parameters (water and air temperature, turbidity, depth, pH, salinity, dissolved oxygen) accompanied sample collections. A total of 106 phytoplankton species, representing six algal divisions and 54 genera were identified. Cyanophyta species were dominant at both stations in the warmer months of August, September, October, and June, and in April at one station only. In all remaining months, Chlorophyta species were dominant, indicating a seasonal shift in phytoplankton composition during winter and spring. The …
The Prairie Naturalist Volume 9, No. 2. June 1977
The Prairie Naturalist Volume 9, No. 2. June 1977
The Prairie Naturalist
PROPAGULE DISPERSAL AMONG FOREST ISLANDS IN SOUTHEASTERN SOUTH DAKOTA ▪ J. W. Ranney and W. C. Johnson
GENERAL WEATHER CONSIDERATIONS FOR THE PRESCRIDED BURNING OF PRAIRIE IN NORTHWEST MINNESOTA ▪ W. D. Svedarsky and R. W. Sands
YELLOW-CROWNED NIGHT HERONS SIGHTED IN NORTH DAKOTA ▪ D. G. Jorde, G. L. Krapu, and R. K. Green
Rodent Density And Species Composition In The Snake River Birds Of Prey Natural Area, Idaho, Jon R. Montan Jr.
Rodent Density And Species Composition In The Snake River Birds Of Prey Natural Area, Idaho, Jon R. Montan Jr.
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
Rodent densities were estimated in the major vegetation types of the Snake River Birds of Prey Natural Area in 1975 and 1976 by a combination of live-trapping and kill-trapping. Only deer mice (Peromyscus maniculatus) were numerous enough to permit reliable density estimates. Relative densities of other rodent species were indicated by kill-trap capture rates. Densities of deer mice correlated well (r = 0.99) with kill-trap capture rates. The use of kill-trapping in place of live-trapping in 1976 permitted extensive sampling throughout the 1930 km2 study area. Differences were found among the major vegetation and land-use types in …
The Effect Of Four Mine Spoil Treatments On The Seedling Water Relations Of Two Plant Species, Lorraine K. Van Kekerix
The Effect Of Four Mine Spoil Treatments On The Seedling Water Relations Of Two Plant Species, Lorraine K. Van Kekerix
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
Surface mines in mountainous areas cause environmental deterioration at lower elevations in the watershed. The most successful long term solution to the downstream problem is revegetation. However, mine spoils are low in essential plant nutrients, have low water holding capacity, and are often acidic. These factors limit plant colonization. Plants must also be adapted to the environmental conditions of high elevations.
At the McLaren Mine, }1ontana, at 2800 m, it was observed that seedlings on revegetation plots were desiccated, indicating possible water deficits. Field and growth chamber studies were carried out to determine the effects of some spoil ameliorating treatments …
Seasonal Course Of Root Respiration In Atriplex Confertifolia, Richard S. Holthausen
Seasonal Course Of Root Respiration In Atriplex Confertifolia, Richard S. Holthausen
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
Root respiratory response of mature Atriplex confertifolia plants growing in established communities was measured during two growing seasons using freshly excised root segments and gas chromatography techniques. Respiratory response at fixed test temperatures changed significantly during the growing season, and this pattern of respiratory adjustment varied for root segments located at different depths in the soil profile. Respiration measured at a constant test temperature was highest during early sumner, and declined to minimum values in late summer and fall. Root segments taken from the top 30 cm of the soil profile displayed peak activity several weeks before root segments from …
Ua77/1 Western Alumnus, Vol. 47, No. 4, Wku Alumni Relations
Ua77/1 Western Alumnus, Vol. 47, No. 4, Wku Alumni Relations
WKU Archives Records
Quarterly magazine created for WKU alumni. Regular features are Hilltopics, Sports, Alumni Newsgrams and Notes and In Memoriam. This issue includes:
- Energy: Campus Conservation
- The Quilting Bee
- Old-Timers Take the Court
- Students and the Job Hunt
- Behind the Scenes
- Living and Learning Laboratories
- Rx for Ailing Indoor Plants
- Mardi Gras! ROTC on Parade
- Following the Yellow Brick Road
- Ford: Words of a President
- Photo Feature - President Downing
- Lights, Camera, Actioin!
The Prairie Naturalist Volume 9, No. 1. March 1977
The Prairie Naturalist Volume 9, No. 1. March 1977
The Prairie Naturalist
NESTING BY FERRUGINOUS HAWKS AND OTHER RAPTORS ON HIGH VOLTAGE POWERLINE TOWERS ▪ D. S. Gilmer and J. M. Wiebe
ARTHROPODS CONSUMED BY AN IMMATURE MARBLED GODWIT ▪ R. M. Timm and R. M. Zink
NOTES
Black-headed Grosbeak in Jamestown, North Dakota ▪ R. Lender
Summer Record of Red-breasted Nuthatch in North Dakota ▪ R. Lender
BOOK REVIEWS
Minnesota's Wild Flowers ▪ Staff
In Search of Eagles ▪ J. Lokemoen
Forest and Range Research ▪ Staff
An Economic Analysis of Recycling ▪ Staff
Certain Edaphic And Biotic Factors Affecting Vegetation In The Shadscale Community Of The Kaiparowits Area, Vane Orlan Campbell
Certain Edaphic And Biotic Factors Affecting Vegetation In The Shadscale Community Of The Kaiparowits Area, Vane Orlan Campbell
Theses and Dissertations
A study area on the southern extensions of the Great Basin cold desert (Kaiparowits Basin, Utah) was selected which has had varying amounts of disturbance. Areas with similar slope and exposure in the Shadscale community were sampled. At each site, soil samples were collected and percent sand, percent clay, percent silt, soluble salts, and hydrogen ion concentrations were measured. Cluster analysis based on percent frequency of the perennial species showed that eight groups or sub-communities were definable within the area sampled. Patterns within the vegetation were shown to be independent with the use of cluster analysis. Discriminant analysis on soil …
Phosphorus And Sulphur Group, J. W. Bowden, R J. Lunt, K F. Longbottom
Phosphorus And Sulphur Group, J. W. Bowden, R J. Lunt, K F. Longbottom
Experimental Summaries - Plant Research
Long Term Trials Stocking and superphosphate trials - 66M30, 68BR7. Maintenance Phosphorus x Sulphur trials - 65A1, 65N5, 65C5, 69WH15, 68B1, 69AL3 and 67N05. Low Rainfall Crops and Pastures. Residual phosphorus trials - 76ES8, 75KA4, 75LG26 and 76NA5. Miscellaneous Cropping Trials. Rate of phosphorus on wheat - 77ES2, 77ME5, 77N03. N. P and seed rates on wheat - 77JE1. Row spacing, phosphorus and seed rate on wheat - 77ME6. Phosphorus on nitrogen build up - 77M033. Rate of super on old land lupins - 77A18 & 19, 77BA13 & 14, 77E20. Pasture Trials. Phosphorus and Sulphur on old land pasture …
Cultivar Evaluation In High Rainfall Areas, D J. Gillespie
Cultivar Evaluation In High Rainfall Areas, D J. Gillespie
Experimental Summaries - Plant Research
1. Trikkala Evaluation Trial 76MT3. A joint trial with D.A. Nicholas. The trial's aim is to compare the competitive ability under grazing of Trikkala and Yarloop clover on a waterlogged new land site. The competitive ability to be measured in the presence and absence of clover scorch. (Kabatiella caulivora). 2. Pasture deterioration. Field experiments. Three trials established in 1975 to determine whether various cultivation techniques could control root rot and. subsequent pasture deterioration have now concluded. 3. Lucerne productivity and persistence. 4. Effects of saline irrigation water on pasture production. During the 1976/77 irrigation season the effects on pasture production …
Longevity Of Doublegee Seed Under Continuous Pasture, D J. Gilbey
Longevity Of Doublegee Seed Under Continuous Pasture, D J. Gilbey
Experimental Summaries - Plant Research
Locality: Avondale, Wongan Hills and Chapman Research Stations. Background. Since 1974 pegged areas on the three research stations have been under continuous pasture and have been sampled annually to study the fate of the viable doublegee seed population. Each site was sprayed for doublegee control in the growing season before the first samples were taken in late summer of 73/74. The sites were again sprayed in the 1974 growing season except for Wongan Hills. The Wongan Hills site was cropped in 1976 and no further data is available. 74C7, 75WH65, 75WH66, 76AL11, 76C9, 76C6, 77C3, 77GE9, 77LC26, 77ME28, 77M028, 77N034, …